US8585217B2 - Bidirectional projector - Google Patents
Bidirectional projector Download PDFInfo
- Publication number
- US8585217B2 US8585217B2 US13/181,089 US201113181089A US8585217B2 US 8585217 B2 US8585217 B2 US 8585217B2 US 201113181089 A US201113181089 A US 201113181089A US 8585217 B2 US8585217 B2 US 8585217B2
- Authority
- US
- United States
- Prior art keywords
- image
- lens
- optical lens
- projecting
- projector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/28—Reflectors in projection beam
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
Definitions
- the present invention relates generally to a projector, and more particularly to a bidirectional projector.
- Projectors are widely used in conferences, speeches, and classes to show information to audiences.
- the conventional projector only may project the slides onto one screen, and the screen must face the audiences that the speaker has to turn to the screen and turn to the audiences frequently in the speech. Sometime, the speaker may block the screen.
- the conventional projector only projects slides onto one screen that the audiences at the back of a large conference place cannot clearly see the screen.
- it usually has to arrange other projectors at different places that all of the audiences may clearly see the screen.
- it has to have plural of projectors and that will cost you much higher.
- the primary objective of the present invention is to provide a bidirectional projector, which may project slides onto two screens in the same time.
- the present invention provides a bidirectional projector including a light source emitting red beam, green beam, and blue beam; at least an imaging device receiving the red beam, the green beam, and the blue beam from the light source and reflecting predetermined parts of the red beam, the green beam, and the blue beam to form an image beam according to image signals; and an optical lens, wherein the image beam emits to the optical lens and a part of the image beam passes through the optical lens to form a first projecting beam, and a part of the image beam is reflected by the optical lens to form a second projecting beam.
- FIG. 1 is a sketch diagram of a first preferred embodiment of the present invention
- FIG. 2 is a sketch diagram of the arrangement of the lenses of the first preferred embodiment of the present invention.
- FIG. 3 and FIG. 4 are sketch diagrams of the first preferred embodiment of the present invention, showing a mask covering the second imaging lens;
- FIG. 5 is a sketch diagram of a second preferred embodiment of the present invention.
- FIG. 6 is a sketch diagram of the second preferred embodiment of the present invention, showing a mask covering the second imaging lens.
- FIG. 7 is a sketch diagram of the present invention installed on the conventional projector that the projector may project slides onto two screens.
- a bidirectional projector 1 of the first preferred embodiment of the present invention includes a light source 10 , an imaging device 20 , an optical lens 30 , a first imaging lens 40 , and a second imaging lens 41 .
- the light source 10 includes a white light lamp 12 and plural of splitting prisms 14 .
- the white light lamp emits white light to a condenser 100 to form a white beam W, and then the white beam W emits to the splitting prisms 14 through a reflector 101 .
- the splitting prisms 14 split the white beam W to emit red beam R, green beam G, and blue beam B in predetermined directions. It may utilize other ways for beam-splitting, such as white light lamp associated with color lenses, or directly utilizing red light lamp, green light lamp, and blue light lamp.
- the imaging device 20 to which image signals are input, includes three digital micromirror devices (DMD) 22 to receive the red beam R, the green beam G, and the blue beam B from the light source 10 .
- the DMDs 22 may reflect predetermined parts of the red beam R, the green beam G, and the blue beam B to the splitting prisms 14 according to the image signals, and these reflected beams are combined into an image beam C after the splitting prisms 14 .
- the DMD is a conventional device in the present field, and its structure, arrangement, and function are well known in the present field, so we do not describe the detail here.
- DMDs as described above, there are some equivalent devices for the imaging device 20 , such as single DMD, liquid crystal display (LCD), liquid crystal on silicon (LCoS), grating light valve (GLV), or other devices which may form the image beam from R, G, B beams.
- LCD liquid crystal display
- LCD liquid crystal on silicon
- GLV grating light valve
- the optical lens 30 includes a beam-splitter arranged between the imaging device 20 and the first imaging lens 40 that the image beam C from the imaging device 20 may emit through the optical lens 30 .
- the beam-splitter 30 may split the image beam C into a first projecting beam C 1 and a second projecting beam C 2 .
- the image beam C emits to the beam-splitter 30 with an incidence angle ⁇ between 0 and 90 degrees (the line L is the normal of the beam-splitter 30 ), and the preferable incidence angle ⁇ is between 40 degrees and 50 degrees.
- the first projecting beam C 1 emits to the first image lens 40 to image the first projecting beam C 1 onto a first image member 150 .
- the second projecting beam C 2 emits to the second image lens 41 to image the second projecting beam C 2 onto a second image member 151 .
- the image members 150 , 151 may be screen, wall, glass, or other relative devices on which the beam may be imaged.
- the reflector 102 may provide a reflector 102 to change the direction of projection of the projector 1 of the present invention.
- the reflector 102 is arranged between the optical lens 30 and the second image lens 41 to reflect the second projecting beam C 2 to the second image lens 41 that the second image lens 41 may be arranged at any position.
- the projector 1 of the present invention may be provided with a lid 50 as shown in FIG. 3 and FIG. 4 .
- the lid 50 may cover the first image lens 40 or cover the second image lens 41 that the projector 1 of the present invention only project image onto one screen via the uncovered image lens 40 or 41 .
- the projector 1 of the present invention may project slides onto two screens at different positions. It may project slides onto one screen as same as the conventional device by the lid 50 .
- a bidirectional projector 2 of the second preferred embodiment of the present invention which is similar to the first preferred embodiment, except that a first image lens 60 is arranged between an imaging device 70 and the optical lens 80 that the optical lens 80 may split the image beam into two beams, one of which emits to the first image member and the other of which emits to second image member via a reflector 103 and a second image lens 61 .
- the projector 2 of the second preferred embodiment may be provided with a lid as shown in FIG. 6 to project slides on one screen only.
- the optical lens 80 , the reflector 103 , and the second image lens 61 may be made into an independent device 200 to be installed on a lens of a conventional projector 300 that the projector 300 may project slides on two screens at the same time.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
- Lenses (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Description
Claims (3)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW100104983A TWI436150B (en) | 2011-02-15 | 2011-02-15 | Projector with dual projection function and its external kit |
TW100104983 | 2011-02-15 | ||
TW100104983A | 2011-02-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20120206697A1 US20120206697A1 (en) | 2012-08-16 |
US8585217B2 true US8585217B2 (en) | 2013-11-19 |
Family
ID=46621380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/181,089 Expired - Fee Related US8585217B2 (en) | 2011-02-15 | 2011-07-12 | Bidirectional projector |
Country Status (3)
Country | Link |
---|---|
US (1) | US8585217B2 (en) |
CN (1) | CN102636944B (en) |
TW (1) | TWI436150B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130235280A1 (en) * | 2010-12-01 | 2013-09-12 | Lemoptix Sa | Projection system |
US10197233B2 (en) * | 2014-12-26 | 2019-02-05 | Maxell, Ltd. | Illumination device |
US20220373782A1 (en) * | 2021-05-21 | 2022-11-24 | Fujifilm Corporation | Projection apparatus and control method |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101233492B1 (en) | 2011-01-21 | 2013-02-15 | 최해용 | 3d movie cinema system |
KR20130035333A (en) * | 2011-09-30 | 2013-04-09 | 삼성전자주식회사 | Reflection apparatus and beam projector having the same |
CN103713455B (en) * | 2012-09-28 | 2016-12-21 | 深圳市绎立锐光科技开发有限公司 | Light-source system and relevant projecting system |
CN104267567B (en) * | 2012-09-28 | 2017-02-01 | 深圳市绎立锐光科技开发有限公司 | Light source system and related projection system |
CN103713454B (en) | 2012-09-28 | 2016-12-07 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and relevant projecting system |
US9563113B2 (en) * | 2012-10-29 | 2017-02-07 | Young Optics Inc. | Multi-projection system using a single illumination source and a single imaging device |
CN103969927B (en) | 2013-01-29 | 2016-12-28 | 扬明光学股份有限公司 | Projection arrangement |
US10152291B2 (en) * | 2015-10-16 | 2018-12-11 | Omnivision Technologies, Inc. | Multi-projector display box for use in retail marketing |
CN105812758B (en) * | 2016-03-11 | 2019-07-26 | 联想(北京)有限公司 | A kind of projection device, optical projection system, electronic equipment and method for controlling projection |
JP6732631B2 (en) * | 2016-10-31 | 2020-07-29 | 株式会社ジャパンディスプレイ | Display device |
TWI587206B (en) * | 2016-11-24 | 2017-06-11 | 財團法人工業技術研究院 | Interactive display device and system thereof |
US9983402B1 (en) * | 2017-02-16 | 2018-05-29 | Christie Digital Systems Usa, Inc. | Forward-on-forward high dynamic range architecture for digital micromirror devices |
CN106802534A (en) * | 2017-04-11 | 2017-06-06 | 河北农业大学 | A kind of bidirectional projection's instrument |
CN109946835B (en) * | 2017-12-21 | 2022-04-26 | 中强光电股份有限公司 | Projection device |
CN110389485A (en) * | 2018-04-20 | 2019-10-29 | 广景视睿科技(深圳)有限公司 | A kind of bidirectional projection's regulating device and projector |
CN110618578B (en) * | 2018-06-19 | 2022-05-06 | 广景视睿科技(深圳)有限公司 | Projector and projection method |
CN108766323A (en) * | 2018-08-01 | 2018-11-06 | 福建省三明市德聚码业设备制造有限公司 | A kind of platform intelligently device for mark |
CN110780516A (en) * | 2019-09-29 | 2020-02-11 | 深圳市火乐科技发展有限公司 | Projector with a light source |
CN112578571A (en) * | 2020-12-28 | 2021-03-30 | 广景视睿科技(深圳)有限公司 | Projection optical system and head-up display device of automobile |
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US5633755A (en) * | 1995-03-08 | 1997-05-27 | Nikon Corporation | Projection apparatus and method |
US20090009730A1 (en) * | 2007-07-02 | 2009-01-08 | Texas Instruments Incorporated | Light Recycling in a Micromirror-Based Projection Display System |
US20090309959A1 (en) * | 2008-06-17 | 2009-12-17 | Junichi Iwai | Stereoscopic image projector and adapter for stereoscopic image projector |
US7828444B2 (en) * | 2006-09-21 | 2010-11-09 | Coretronic Corporation | Projection apparatus |
US7901084B2 (en) * | 2005-11-02 | 2011-03-08 | Microvision, Inc. | Image projector with display modes |
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JPH05107659A (en) * | 1991-10-17 | 1993-04-30 | Fujitsu General Ltd | Projector device |
KR0130606B1 (en) * | 1994-07-30 | 1998-04-11 | 배순훈 | A 3-d projector |
US6473240B1 (en) * | 2000-09-19 | 2002-10-29 | Rockwell Collins | Apparatus and method for using orthogonally polarized light in projection cockpit displays |
KR20040079334A (en) * | 2003-03-07 | 2004-09-14 | 일진다이아몬드(주) | Projection System with separate 3 channel color bean transmission mode and projection lens using there |
JP2005077715A (en) * | 2003-08-29 | 2005-03-24 | Matsushita Electric Ind Co Ltd | Video projection device and method |
US6886943B1 (en) * | 2003-10-24 | 2005-05-03 | Jds Uniphase Corporation | High-resolution projection display system |
CN2674482Y (en) * | 2004-01-19 | 2005-01-26 | 上海信诚至典网络技术有限公司 | Three lens liquid crystal projector |
CN100507638C (en) * | 2006-10-26 | 2009-07-01 | 中强光电股份有限公司 | Projecting apparatus |
CN101398536B (en) * | 2007-09-24 | 2011-05-04 | 鸿富锦精密工业(深圳)有限公司 | Stereo projection optical system |
JP2010139590A (en) * | 2008-12-10 | 2010-06-24 | Sony Corp | Image projection device, and two-dimension/three-dimension switching method of projection image |
-
2011
- 2011-02-15 TW TW100104983A patent/TWI436150B/en not_active IP Right Cessation
- 2011-04-06 CN CN201110085485.5A patent/CN102636944B/en not_active Expired - Fee Related
- 2011-07-12 US US13/181,089 patent/US8585217B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5633755A (en) * | 1995-03-08 | 1997-05-27 | Nikon Corporation | Projection apparatus and method |
US7901084B2 (en) * | 2005-11-02 | 2011-03-08 | Microvision, Inc. | Image projector with display modes |
US7828444B2 (en) * | 2006-09-21 | 2010-11-09 | Coretronic Corporation | Projection apparatus |
US20090009730A1 (en) * | 2007-07-02 | 2009-01-08 | Texas Instruments Incorporated | Light Recycling in a Micromirror-Based Projection Display System |
US20090309959A1 (en) * | 2008-06-17 | 2009-12-17 | Junichi Iwai | Stereoscopic image projector and adapter for stereoscopic image projector |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130235280A1 (en) * | 2010-12-01 | 2013-09-12 | Lemoptix Sa | Projection system |
US9671683B2 (en) * | 2010-12-01 | 2017-06-06 | Intel Corporation | Multiple light source projection system to project multiple images |
US10197233B2 (en) * | 2014-12-26 | 2019-02-05 | Maxell, Ltd. | Illumination device |
US20220373782A1 (en) * | 2021-05-21 | 2022-11-24 | Fujifilm Corporation | Projection apparatus and control method |
US11947105B2 (en) * | 2021-05-21 | 2024-04-02 | Fujifilm Corporation | Projection apparatus and control method |
Also Published As
Publication number | Publication date |
---|---|
US20120206697A1 (en) | 2012-08-16 |
CN102636944B (en) | 2015-03-25 |
CN102636944A (en) | 2012-08-15 |
TWI436150B (en) | 2014-05-01 |
TW201234097A (en) | 2012-08-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ASIA OPTICAL CO., INC., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, CHUN-YEN;REEL/FRAME:026579/0832 Effective date: 20110712 |
|
AS | Assignment |
Owner name: ASIA OPTICAL INTERNATIONAL LTD., VIRGIN ISLANDS, B Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ASIA OPTICAL CO., INC.;REEL/FRAME:028842/0010 Effective date: 20120816 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.) |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20171119 |